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Thevenin technique solving problem -- getting wrong answer

  • Thread starter sciman
  • Start date
24
1
Hi

Can you tell me please what I am doing wrong here
upload_2015-4-15_16-15-57.png

I need to find the Vc function after we close the switch.
To do this, I calculate the Thevenin equivalent circuit.
I calculate Vth to be 21/(60+30) times 30, which makes 0.7V but why the answer is 7V????
Basically the answer is Vc=7x(.... which means that final voltage of capacitor is 7V and not 0.7V.
Any idea?

thanks
 

Answers and Replies

Delta2
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Ehm hm, 30x(21/(60+30))=7
 
24
1
I am embarassed
 

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